In the last picture, it looks to me that the weeds that flooded are mostly smartweed. The ducks will love it. I've had smartweed continue to grow in a couple feet of water, but next year, if the water stays high, it won't re-grow in that area.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).